KR20030012958A - Floating floor structure for reducing floor shock sound and floor materials for building - Google Patents

Abstract

PURPOSE: A sound insulation floating floor structure is provided to improve soundproofing, dustproofing, vibration and sound insulating efficiencies. CONSTITUTION: The sound insulation floating floor structure is formed by installing a buffer layer(12), a lightweight cellular concrete layer(13) and a finishing mortar layer(15) on a floor concrete slab(11) of a building, wherein the buffer layer(12) contains high-density blocks(17) arranged on the concrete slab(11) at regular intervals, a plate-shaped low-density sound absorber(18) installed between the high-density blocks(17), and an isolation board(19) piled on the high-density block(17) and the low-density sound absorber(18).

Description

Floating floor structure for reducing floor shock sound and floor materials for building}

The present invention relates to a floating floor structure for floor impact noise reduction and building flooring, and a buffer layer of a floor structure formed by constructing a buffer layer, a lightweight foam concrete layer, and a finishing mortar layer on a floor concrete slab of a building step by step to a predetermined thickness. Construct a low-density sound absorber in the form of a plate and roll-shaped building flooring integrally formed with a high density block embedded in the low-density sound absorber, and construct a barrier plate to be laminated to the upper side, such as apartment houses, high-rise buildings, etc. The present invention relates to a floating floor structure for floor impact sound reduction and a building flooring material, which can block noise and vibration generated from the inside of a multi-storey building from being transmitted to a lower floor through an interlayer slab layer.

In general, the floor of the building mainly uses concrete slab. The floor structure using the concrete slab is a good sound insulation material because it blocks air transmission well, but the solid structure is directly transmitted by applying vibration or impact to the concrete structure. When sound is generated, it does not attenuate the noise significantly and emits to the lower floor and the adjacent room through the slab structure. Therefore, in order to effectively control the radiation sound, a method of maximizing the sound absorbing force of the floor cushion material by minimizing the radiation area to the lower sound layer has been studied.

Thus, as shown in the floor structure of a common multi-family building in Figure 1, the floor structure of the multi-family building is a concrete slab (1), a buffer layer (2), lightweight foamed concrete layer (3), piping (4), finishing mortar The layer 5 and the floor covering layer 6 are constructed to be laminated in stages.

The slab (1) is mostly made of reinforced concrete, and currently, the construction is generally applied to the thickness of 125 ~ 135mm to apply to the multi-family housing in our country. In addition, the buffer material to be installed in the buffer layer 2, there are a variety of materials such as waste tire chips, rubber-based mat, glass-based mat, the thickness is usually about 10 to 20mm.

Lightweight foamed concrete layer (3) to be constructed on the buffer layer (2) is an ondol layer consisting of a heat insulating layer and a heat storage layer, and the ondol pipe (4) is interposed therebetween, in order to satisfy the heat insulating performance prescribed by law Most of them use lightweight foam concrete. And the thickness of the lightweight foam concrete depends on the thickness of the buffer layer (2), but the total thickness is around 70mm, the mortar layer (5) by forming a mortar (mortar) of about 50mm in most cases as a finishing material on top Finally, a floorboard material such as floorboard is finally installed on the floorboard layer 6 to form the floorboard layer 6, but the underfloor pipe 4 and the floorboard layer 6 may not be constructed depending on the use of the building.

The above-mentioned floor structure generally shows improvement of grades 1 to 3 compared to the unapplied floor structure in the case of lightweight impact sound by using the floor structure improvement techniques using buffer material. However, the impact sound is mainly reduced in the high frequency band rather than in the low frequency band. to be. On the other hand, in the case of the heavy impact sound, the improvement in the low range is not made, and most of them are similar to the unapplied floor structure or show a slight improvement effect of the first grade.

The grade of the floor impact sound described above is defined in Japanese Industrial Standard (JIS 1419), and is determined by the level of the floor impact sound expressed by frequency band using the frequency reference curve for the impact sound. The heavy shock sound is a grade 1 that is hardly felt when the L index is less than 50, and the grade 4 is that a serious dissatisfaction occurs when the L index is 60 or more. Here, the light weight shock sound has a slightly different rating standard for the L index.

That is, the floor shock sound reducing material used to reduce the floor impact sound is generally a soft buffer material of elastic material that absorbs the floor impact, and is a waste tire pulverized product, rubber chip, EVA chip (Ethyline Vinyl Acetate Chip), foamed styrene foam, EPS (Expended Poly Styrene) is used, but when the material is applied on the slab is not enough buffer material thickness increases the modulus of elasticity, so that the effect of the buffer material due to the floating bottom structure, especially in the low range does not appear at all.

In other words, in the case of light impact sound whose sound insulation class is determined in the middle and high frequency bands, the impact sound level is lowered when the shock absorbing material of about 10-20 mm is used in the existing floor structure, but in the case of the heavy impact sound whose sound insulation level is determined in the low frequency band, Since it is difficult to control low-frequency noise alone, there is a problem that the improvement effect by the buffer material is not so great.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a floor layer structure for reducing the floor impact sound to improve the soundproof, dustproof, dustproof, dustproof and insulation performance by forming a floating floor layer structure. .

Still another object of the present invention is to provide a building flooring material which makes a floating floor structure for reducing floor impact sound that effectively blocks impact sound.

In addition, the impact sound reduction effect of the low-frequency band, especially among the floor impact sound is to be improved.

1 is a cross-sectional view showing a floor structure of a common multi-family building.

Figure 2 is a cross-sectional view showing a floor structure for reducing the floor impact sound according to an embodiment of the present invention.

Figure 3 is a schematic diagram showing the construction process of the floor structure for reducing the floor impact sound according to an embodiment of the present invention.

4 is an explanatory diagram for explaining a buffer layer according to an embodiment of the present invention.

5 is a schematic view for explaining the configuration of the building flooring of the present invention.

6 is a schematic view for explaining the impact sound calculation method.

7 is a moment diagram of the structural modeling according to the present invention.

-Explanation of symbols for the main parts of the drawings-

11: floor concrete slab 12: buffer layer

13: lightweight foam concrete layer 14: piping

15: mortar layer 16: jangpan layer

17: high density block 18: low density sound absorbing material

19: blocking plate 20: granular insulating material

30: flooring for building

The present invention for realizing the above object is a floor structure formed by constructing the buffer layer, lightweight foam concrete layer, and the finishing mortar layer step by step on the floor concrete slab of the building, the buffer layer is a predetermined distance to the concrete slab A high density block arranged in the form of a structure, a low density sound absorbing material provided between the high density blocks, and a barrier plate member are constructed so as to be stacked above the high density block and the sound absorbing material.

Characterized by connecting the barrier plate material so that the light-weight foam concrete to be constructed on the buffer layer is not leaked to the lower side.

The blocking plate is characterized in that the synthetic resin or wood.

The high density blocks are arranged at intervals of 90 cm.

On the other hand, before constructing the buffer layer is characterized in that the granular insulating material is first installed on each wall surface of the building in contact with the concrete slab.

In the building flooring material to block the noise, vibration and heat conduction between the floor by building on the floor of the building, characterized in that the plate-shaped low-density sound absorbing material of a predetermined thickness and the high-density block coarsely embedded in the low-density sound absorbing material is integrally formed It is done.

In addition, the building flooring is characterized in that the roll (Roll) form having a predetermined width.

In addition, the high-density block is characterized in that the embedding so as to be located on the outermost side of the low-density sound absorbing material.

In addition, the low-density sound absorbing material is one selected from the group consisting of waste tire grinding, rubber chips, EVA chip (Ethyline Vinyl Acetate Chip), expanded styrene foam, EPS (Expended Poly Styrene), glass wool, rock wool, asbestos, etc. do.

The high-density block is characterized in that the selected one of the metal, wood and synthetic resin material to support the load of the light-weight foam concrete layer and the finishing mortar layer to be installed on the top.

In the present invention made as described above, the high density block of the buffer layer supports the load of the light-weight foamed concrete layer and the finishing mortar layer, so that the low-density flaw material forms a floating floor structure to reduce noise, vibration, and heat transfer.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings. In addition, this embodiment does not limit the scope of the present invention.

Figure 2 is a cross-sectional view showing a floor impact sound structure for floor impact reduction according to an embodiment of the present invention, Figure 3 is a schematic diagram showing the construction process of the floor impact sound structure for floor impact reduction according to an embodiment of the present invention, 4 is an explanatory diagram for explaining a buffer layer according to an embodiment of the present invention.

As described in the above drawings, the floor impact structure for reducing the floor impact sound according to the present invention includes a buffer layer 12, a lightweight foam concrete layer 13, and a finishing mortar layer 15 in the floor concrete slab 11 of a building. In the construction to be stacked in the form, the high-density block 17 for arranging the buffer layer 12 in the concrete slab 11 at regular intervals, and the plate-shaped low density sound absorbing material 18 provided between the high-density block 17 and In addition, the high density block 17 and the low density sound absorbing material 18 are formed to be made of a blocking plate material 19 stacked on the upper side.

That is, first, the high density blocks 17 may be arranged at regular intervals, and a plate-shaped low density sound absorbing material 18 may be provided between them, and the low density sound absorbing material 18 is first installed on the floor concrete slab 11, and the low density sound absorbing material ( The high density block 17 may be appropriately embedded between 18). Low-density sound absorbing material 18 is any tire used for cushioning or sound insulation, such as waste tire pulverized, rubber chips, EVA (Ethyline Vinyl Acetate Chip), expanded styrene foam, EPS (Expended Poly Styrene), glass wool, rock wool, asbestos The low density sound-absorbing material 18 may be cut off so that the high density block 17 is embedded by cutting means, and the high density block 17 may be embedded.

In addition, the high-density block 17 is sufficient to support the load of the light-bubble concrete layer 13 and the finishing mortar layer 15, the barrier plate 19 is stacked on top of the construction to ensure structural stability Since the low-density sound absorbing material 18 maintains its height without being pressed, a predetermined air layer is maintained to form a floating bottom layer. That is, it becomes a floating bottom layer structure, and the weight shock sound of a low frequency band and the lightweight shock sound of a high frequency band can be reduced simultaneously.

It is excellent in mechanical stability even when the buffer layer 12 is formed to a thickness of 30mm or more, and the reduction of impact sound reduction performance by the sound bridge does not appear, and thus the performance of reducing the impact sound on the floor is excellent.

In addition, it is preferable to bury at high intervals to minimize the high-density block 17 within the range to ensure the mechanical stability that can support the upper structure. Therefore, when using the timber, such as plywood for the barrier plate 19 to be installed on the top is generally about 90cm in width, in order to support the edge of the barrier plate 19 in order to minimize the effective mass of the impact point (high density block ( 17) is preferably arranged so that the high density blocks 17 are arranged at intervals of 90 cm, which is the width of the barrier plate 19.

In addition, the barrier plate materials are jointly connected to the bonding means 19a so that the light-weight foamed concrete constructed on the buffer layer 12 is not leaked to the lower side. The adhesive means 19a is most easily and effectively taped using an adhesive tape.

The barrier plate 19 may be made of synthetic resin or wood. Especially, plywood, which is wood, has an excellent cracking effect in the vicinity of a specific low frequency range of 80 to 300 Hz.

Meanwhile, before the buffer layer 12 is constructed, the granular insulating material 20 may be first installed on each wall surface of the building in contact with the concrete slab 11.

The granular insulating material 20 may be any one of a waste tire pulverized product, a rubber chip, an EVA chip (Ethyline Vinyl Acetate Chip), expanded styrene foam, EPS (Expended Poly Styrene), glass wool, rock wool, and asbestos.

In addition, the granular insulating material 20 may be installed at a height from the surface of the concrete slab 11 to the height of the top surface layer, that is, the bottom finishing layer 16, to reduce the impact sound emitted to the side of the building.

In this case, namely, as shown in FIG. 5, which is a schematic diagram for explaining the construction of the building flooring material of the present invention, a plate-shaped low density sound absorbing material 18 having a predetermined thickness and a high density block coarsely embedded in the low density sound absorbing material 18. If the building flooring material 30 formed integrally with (17) is used in the floating floor structure for reducing the impact sound, the construction can be more effectively performed.

When the building flooring material 30 is formed in the shape of a roll having a predetermined width, the construction of the concrete slab 11 becomes easier.

That is, if the building flooring material 30 is formed to have the same width as the blocking plate material 19 provided at the upper part, and the high density block 17 is embedded so that it may be located in the outermost side of the low density sound absorbing material 18, the high density block 17 will be made. Since the edge portion of the blocking plate 19 is supported, the high density block 17 can be minimized.

The low-density sound absorbing material 18 may be any one of waste tire pulverized products, rubber chips, EVA chip (Ethyline Vinyl Acetate Chip), expanded styrene foam, expanded polystyrene (EPS), glass wool, rock wool, and asbestos. The sound absorbing material may be a combination or combination of these.

The high-density block 17 is made of a material having a certain strength and may be selected and installed from metal, wood, and synthetic resin.

In particular, the granular insulating material 20 can also be used by cutting the building flooring material 30 to an appropriate height.

In the present invention, by complementing the existing technology to solve the floor impact sound problem of the apartment house focusing only on the development of the cushioning material, the composite material system of the cushioning material and the structural system aspect of the cushioning material are considered in consideration, and the low frequency band is mainly a problem. It is also very effective at reducing the number of high-density blocks supporting the superstructure (90 cm apart) within the permissible range of mechanical stability and maximizing the effective mass of the impact point by placing it at the edge of the thread as much as possible.

In addition, a low-density sound absorbing material having good sound absorption characteristics in the middle and high frequencies and a blocking material having excellent sound absorbing effect near a specific resonance frequency in the low range of 80 to 300 Hz were used at the same time, and the bottom layer structure was formed to reduce the low range.

Increasing the thickness and surface density of the floor can attenuate the amplitude of the vibration generated by the impact, thereby lowering the sound. The increase in the rigidity of the floor increases the effective mass of the impact point, thereby reducing the effect.

This is a lightweight foamed concrete layer (2) is 70mm and mortar layer (5) 50mm in accordance with the construction standards in the general building floor structure as shown in Figure 1, which is the floor in the present invention shown in FIG. Since the low density flaw material 18 is formed to form an air layer without compressing, the insulation performance is improved, thereby reducing the thickness of the lightweight bubble layer 15 (70mm to 50mm), which is mainly intended for thermal insulation, and finishing mortar layer (15). ) Thickness can be increased (50mm to 70mm). Therefore, when the thickness of the finishing mortar layer 15 is increased, the weight impact sound due to the reduction of the floor slab behavior is reduced by the increase of the upper load.

Therefore, in addition to the noise reduction buffer function, it is possible to maintain the existing interlayer insulation performance through the low density defect sound material 18, thereby increasing the effect of reducing the floor impact sound by changing the thickness of the lightweight foam layer 15 and the finishing mortar layer 15. It becomes possible.

Fig. 6, which is a schematic diagram for explaining the method of calculating the impact sound, when the impact source having the mass (Kg) of Mt has a homogeneous bottom slab at the collision speed (m / s) of Vt, the bottom impact sound in the low and midrange bands. The level considers the elastic modulus (kc: N / m ² ) of the impact surface and the friction coefficient (rc: N / m / s) of the impact surface of the mortar finish, and the mass (Ms: kg) of the floor slab. In general, there is a reduction of about 12 dB as the slab thickness is inversely proportional to the quadratic of the slab thickness, that is, inversely proportional to the density and Young's modulus. Therefore, by increasing the thickness of the buffer layer, that is, the finishing mortar layer, it is possible to improve the weight impact sound through the method of reducing the behavior of the bottom slab by the increase of the upper load.

Therefore, in the embodiment shown in Figure 4, if the support spacing of the high-density block 17 is installed at intervals of 90 cm both up, down, left, and right, the concrete design reference strength of f _ck = 240kg / cm ² as a structural form of three-stage continuous plain concrete beam If the depth of the finishing mortar is set to 7.0cm (not considering the influence of heating pipe) and the rigidity of the load and the finishing mortar acting on the supporting point (interval 90cm) is replaced with the beam element, the structural modeling is as follows.

Dead dead weight is equal to W _D = 2.5 Tons / m ³ × 0.9 (m) × 0.07 (m) = 0.1575 tons / m = 1.575 kgf / cm, and live air conditioner (340 kgf / m ² = 340 / (100 × 90) = 0.038 kgf / cm ² ), piano (240 kgf / m ² = 240 / (100 × 90) = 0.027 kgf / cm ² ), human (50 kgf / m ² = 50 / (100 × 90 Considering a load of) = 0.005 kgf / cm ² ), the sum of the live loads is ΣW _L = 0.070 kgf / cm ² .

At this time, considering the load factor, the design load is W = 1.4 × 1.575 + 1.7 × 0.070 = 2.205 + 0.119 = 2.324 kgf / cm ² .

Therefore, the structural analysis results as shown in the moment diagram of the structural modeling in FIG. 7 can be obtained. At this time, M _u is (+) 1,340.0 kg-cm, (-) 1,785.2 kg-cm.

Here, if you do the cross-sectional calculation to examine the warp, Therefore, you get the following result.

M _n = -(Concrete Structural Design Standard)

-S = = 490 cm ³

M _n = × 490 = 10,096.093 kg-cm

M _d = = 0.85 × 10,096.093 = 8,581.68 kg-cm

∴ (1,785.20 ≤8,581.68)-OK

That is, as a result of examining the flexural strength of the concrete with the support points arranged at intervals of 90.0 cm in the floor finishing mortar in the structural calculation, it can be seen that the 7.0 cm finishing mortar can sufficiently support the dead load and the live load. .

Therefore, the floating bottom layer structure is formed to improve sound insulation, dustproofing, dustproofing, dustproofing, and heat insulating performance, and in particular, the impact sound reduction effect of the low frequency band, among the floor shock sounds, is improved.

As described above, the present invention is transmitted to the lower floor through the interlayer slab layer due to the floor layer structure with the noise and vibration generated inside the multi-storey building such as apartment houses, high-rise buildings, etc. There is an advantage that can be effectively blocked.

Therefore, there is an advantage that the sound insulation, sound insulation, vibration damping, dustproof and heat insulation performance can also be improved.

Claims (8)

In the floor structure formed by constructing the buffer concrete layer, lightweight foam concrete layer, and the finishing mortar layer step by step on the floor concrete slab of the building, The buffer layer is constructed of a high density block arranged at a predetermined interval on the concrete slab, a low density sound absorbing material installed between the high density block, and the construction of the blocking plate to be laminated to the upper side of the high density block and the sound absorbing material to improve the impact sound reduction effect of the low frequency band of the floor impact sound Floating bottom layer structure for reducing the floor impact sound, characterized in that. The floor structure of claim 1, wherein the barrier plate materials are connected to each other by an adhesive means so that lightweight foamed concrete constructed on the buffer layer is not leaked to the lower side. According to claim 1, wherein the barrier plate material is flooring structure for reducing the floor impact sound, characterized in that the synthetic resin material or wood. In the construction flooring to block the noise, vibration and heat conduction between floors by installing on the floor of the building, A low floor sound absorbing material having a predetermined thickness and a high density block coarsely embedded in the low density sound absorbing material are integrally formed. The building flooring material of claim 4, wherein the building flooring material has a roll shape having a predetermined width. The building flooring material according to claim 4, wherein the high-density block is embedded so as to be located only at one side of the low-density sound absorbing material. The method of claim 4, wherein the low-density sound absorbing material is a group consisting of waste tire pulverized product, rubber chips, EVA chip (Ethyline Vinyl Acetate Chip), expanded styrene foam, expanded polystyrene (EPS), glass wool, rock wool, asbestos, etc. Building flooring characterized in that the one selected from. According to claim 4, The high-density block is a building flooring, characterized in that formed of wood or synthetic resin material to support the load of the light-bubble concrete layer and the finishing mortar layer to be constructed above.